WO2018104372A1 - Procédé de détection du mouvement d'une articulation de mâchoire - Google Patents

Procédé de détection du mouvement d'une articulation de mâchoire Download PDF

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Publication number
WO2018104372A1
WO2018104372A1 PCT/EP2017/081641 EP2017081641W WO2018104372A1 WO 2018104372 A1 WO2018104372 A1 WO 2018104372A1 EP 2017081641 W EP2017081641 W EP 2017081641W WO 2018104372 A1 WO2018104372 A1 WO 2018104372A1
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WO
WIPO (PCT)
Prior art keywords
marker
lower jaw
model
data set
movement
Prior art date
Application number
PCT/EP2017/081641
Other languages
German (de)
English (en)
Inventor
Volker Rasche
Stefan WUNDRAK
Original Assignee
Sirona Dental Systems Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sirona Dental Systems Gmbh filed Critical Sirona Dental Systems Gmbh
Priority to CN201780075848.2A priority Critical patent/CN110022792B/zh
Priority to US16/466,316 priority patent/US11116444B2/en
Priority to EP17818077.4A priority patent/EP3551126B1/fr
Publication of WO2018104372A1 publication Critical patent/WO2018104372A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
    • A61B5/4542—Evaluating the mouth, e.g. the jaw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
    • A61B5/004—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1121—Determining geometric values, e.g. centre of rotation or angular range of movement
    • A61B5/1122—Determining geometric values, e.g. centre of rotation or angular range of movement of movement trajectories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
    • A61B5/1127—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique using markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A61C19/045—Measuring instruments specially adapted for dentistry for recording mandibular movement, e.g. face bows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/5608—Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56308—Characterization of motion or flow; Dynamic imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3933—Liquid markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3954—Markers, e.g. radio-opaque or breast lesions markers magnetic, e.g. NMR or MRI
    • A61B2090/3958—Markers, e.g. radio-opaque or breast lesions markers magnetic, e.g. NMR or MRI emitting a signal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3966—Radiopaque markers visible in an X-ray image
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3991—Markers, e.g. radio-opaque or breast lesions markers having specific anchoring means to fixate the marker to the tissue, e.g. hooks

Definitions

  • the invention relates to a method for detecting and representing the movement of a lower jaw and a
  • Typical methods for detecting and displaying TMJ movement such as those used to diagnose craniomandibular dysfunctions, combine motion data from an Axiography scan with image data from a DVT scan. Frequently, the representation thus obtained is supplemented by the data of a surface scan.
  • the disadvantage is that both the radiation exposure through a DVT scan, the inability of the DVT scan to represent soft tissue and the high expenditure of time.
  • the object of the invention is to further develop the state of the art and a method for the simple and rapid detection and visualization of the movement of a temporomandibular joint using a patient with an MRI image of the head to provide magnetic resonance tomographic measurement. Presentation of the invention
  • An object of the invention is a method for detecting and displaying the movement of a mandibular joint of a patient connecting a lower jaw and an upper jaw by means of magnetic resonance tomography, wherein at least one MRI marker is fastened to the lower jaw of the patient by means of a fastening means.
  • a plurality of magnetic resonance tomographic measurement data records of a recording volume are generated successively in time, wherein at least the temporomandibular joint and / or at least a part of the lower jaw and the at least one marker are positioned in the receiving volume during the first measurement time interval, the lower jaw during the first measurement time interval relative to that Upper jaw performs a movement and the movement of the lower jaw comprises a first position relative to the upper jaw.
  • an at least two-dimensional marker position of the at least one marker in the recording volume is determined and a marker movement curve is created based on the determined marker positions, whereby a point corresponding to the first position of the lower jaw to the upper jaw is determined on the marker movement curve.
  • a marker movement curve is created based on the determined marker positions, whereby a point corresponding to the first position of the lower jaw to the upper jaw is determined on the marker movement curve.
  • at least one image data set of the receiving volume is generated, wherein at least the temporomandibular joint and / or at least part of the lower jaw and the at least one marker are positioned in the receiving volume during the second measuring time interval and the lower jaw is positioned during the second Measuring time interval relative to the upper jaw in the first position.
  • a first model and a second model are determined from the image data set, wherein the first model represents at least part of the maxilla and / or a part of the temporal bone that comprises the temporomandibular joint, also called the mandibular fossa, and the second model represents at least part of the lower jaw represents. From the image data set, a relative position of the marker to the first model and to the second model is further determined.
  • a movement pattern of the second model relative to the first model is calculated and displayed. It goes without saying that the method step of marker positioning is carried out before the first and the second measuring time interval or the generation of the first measuring data sets and the image data set.
  • the first measuring time interval may be prior to or after the second measuring time interval.
  • Movement of the temporomandibular joint is a chewing motion or a periodic opening and closing of the mouth or any other jaw movement performed during the first measuring time interval.
  • the first position of the lower jaw relative to the upper jaw is, for example, the natural final bite or a position coded by a dental impression.
  • the first position can be determined both in the movement curve and reliably reproducible for the generation of the image data set.
  • the relative position of the first model and the second model relative to the marker in the first position eg, the final bite, is obtained from the image data set which is generated in the first position when the jaw is stationary. It is understood that the relative position of the one model to the marker is also determined when the relative position of one model to the other model and the relative position of the other model to the marker is determined.
  • the magnetic resonance tomographically visible marker comprises any marker which is suitable for unambiguous recognition within magnetic resonance tomographic data.
  • the measurement data sets generated during the first measurement time interval are each used only to determine the at least two-dimensional, preferably three-dimensional position of the marker in the recording volume at the time of generation of the respective measurement data set.
  • the measured data sets are not used for visual recording of the recording volume or of the lower jaw, upper jaw and / or markers.
  • the measurement datasets are any desired measurement data sets that can be generated by means of magnetic resonance tomography and provide information about the marker position.
  • single magnetic resonance tomographic projection images suffice for this purpose, wherein the projection image is a data quantity acquired as part of a measurement sequence along a k-space trajectory becomes.
  • the trajectories sampled to determine a marker position are preferably oriented orthogonal to one another.
  • the measured data sets correspond in each case to a radial scanning along a radial beam or a so-called spoke within the recording volume or the data acquired during the sampling, such sampling typically taking only about 1 to 5 ms.
  • the time required for generating a measurement data set is very short, in particular in comparison to the time required for generating an image data set, which makes it possible to record many measurement data sets in a short time sequence and thus the movement of the marker attached to the lower jaw, ie capture different marker positions with a high temporal resolution.
  • the marker positions determined in each case from the individual measurement data sets are combined to form a marker movement curve. It is understood that all or at least all suitable marker positions or a suitable selection of marker positions are used for this purpose.
  • information about the movement of the temporomandibular joint is determined independently of a visual display or acquisition of image information.
  • a pictorial representation of at least part of the jaw region is acquired as an image data set during the second measurement time interval.
  • the image data set can be determined according to any known imaging method, For example, be detected by means of magnetic resonance tomographic method, which is suitable at least parts of the jaw and / or the temporomandibular joint in each case with teeth and gums and / or bone chen and detect the marker in at least two, preferably in three dimensions.
  • the first model includes the upper jaw or one
  • the second model comprises the lower jaw or a part of the lower jaw, e.g. the joint-forming cylindrical condyle of the lower jaw (caput mandibulae).
  • the first and second models are at least two-dimensional, preferably three-dimensional.
  • the temporomandibular joint movement is then illustrated by a movement of the second model relative to the first model, whereby movement data are taken from the movement curve.
  • For the representation of the jaw movement is thus a static, pictorial representation of the jaw, namely the image data set, in an upper and a lower area, e.g. Dissected upper jaw and lower jaw and then moves the lower area relative to the upper area according to the determined movement curve of the marker.
  • illustration may be in the form of a video, superimposed images, or any other form.
  • An advantage of the detection according to the invention of temporomandibular joint movements is that movement data and image data are acquired in separate method steps.
  • the method steps can each be adapted to the different requirements.
  • it may be temporal and / or in terms of data quality and / or the radiation exposure optimized method can be selected.
  • each measurement data set comprises at least three ID projection exposures or at least two 2D projection images.
  • each first measurement data set comprises exactly one ID project, wherein in each case one marker position is determined on the basis of at least two measurement data sets.
  • the at least one image data set is generated by magnetic resonance tomography, radiography or also optically, wherein in the case of radiographic generation the at least one marker is optically identifiable at least in a region known with respect to its position and optically unambiguous upon optical generation.
  • the at least one image data set with the magnetic resonance tomographic recording device used for the generation of the measurement data sets is generated, then a further device for generating the image data set is unnecessary. This also makes it possible to save a new positioning of a patient for the generation of the image data set. Furthermore, the magnetic resonance imaging of the image data ensures a good representation of soft tissues and a good discernibility of the discus Articularis. In addition, it is possible using the same recording device, even for the image data set a three-dimensional position of the marker in Determine recording volume and use for the transmission of the marker movement curve on the movement of the lower jaw.
  • a magnetic resonance tomographic image data set that is to say a pictorial representation or a two-dimensional or three-dimensional static model of at least part of a jaw region
  • a plurality of projection images or k-space profiles are typically required, for example 200 ⁇ 200, from which the image data set is generated.
  • the image data set can also be generated by an optical measurement of the lower jaw, the upper jaw and the at least one positioned marker, e.g. by means of an intraoral camera.
  • a combination of magnetic resonance tomographic and optical measurement results for the image data set is also possible.
  • Optical measurement data enable a very high spatial resolution of the tooth surface as well as advanced forms of therapy, such as the production of dental splints. It is likewise possible to generate the image data record completely or partially from radiographic measurement data.
  • the at least one marker is a magnetic resonance tomographically active or a magnetic resonance tomographically semi-active marker, particularly advantageously a coil or a combination of a coil and a body arranged in the coil and filled with a liquid, wherein the liquid preferably with a Contrast agent is doped.
  • a semi-active marker is an inductively coupled to the receiving system device, for example, a resonant circuit with a micro-coil and an inside the micro-coil arranged body filled with a doped liquid, while an active marker has a receiving coil connected to its own receiving channel.
  • the semi-active marker provides a particularly clear signal due to the increase in the effective flux and flip angle within the micro-coil, which is detectable by means of a receiving coil of the MRI system.
  • the active marker By means of the active marker, the position information is recorded independently of the receiving coil of the MRI system.
  • the generation of a measurement data set for determining the position of a semi-active marker comprises, for example, a measurement sequence having a flip angle of a few degrees, the semi-active marker locally amplifying the Bl + field, ie increasing the flip angle locally.
  • the semi-active marker provides a significantly amplified signal compared to the rest of the field of view, so that a position determination is simple and very reliable.
  • the measured data sets are detected directly by means of the active marker, while the image data set is determined in the case of a magnetic resonance tomographic generation by means of a receiving coil of the magnetic resonance tomography device used.
  • the strength of the measurable signal is amplified.
  • the at least one marker has a three-dimensionally unambiguous structure, eg a cross to allow a quick and easy determination of the three-dimensional position of the marker.
  • the at least one marker is positioned outside the oral cavity of the patient.
  • the at least one marker within an oral cavity of the patient is affixed to a surface of at least one tooth, e.g. on a lingual surface of one or more incisors or on an oral surface of one or more molars.
  • the attachment means is a paraocclusal spoon, wherein the paraocclusal spoon is placed on and detachably connected to the teeth of the lower jaw, wherein the at least one marker is placed on at least one protruding from the oral cavity arm of the paraocclusal spoon and at least one receiving coil for generating the measured data records and / or the image data set in a region of the temporomandibular joints is arranged.
  • a paraocclusal Löffei is an arcuate, mostly individualized device that can be attached, for example by means of an adhesive to the teeth of the upper jaw or the lower jaw, whereby the Para occlusal Löffei follows the movement of the respective jaw.
  • the paraocclusal Löffei is made of a material, e.g. Plastic, which affects the magnetic resonance imaging as little as possible, for example, by producing the lowest possible signals.
  • Embodiments of the invention are illustrated in the drawing. It shows the 1 method steps according to a first embodiment of the method according to the invention,
  • Fig. 2 is a schematic representation of a moving relative to an upper jaw model lower jaw model.
  • FIG. 1 outlines process steps of the method according to the invention in accordance with a first embodiment.
  • a marker 1 is attached to a lower jaw 2 of a patient 3 by means of a fastening means 10.
  • the marker 1 consists of a magnetic resonance tomographically visible material.
  • the fastening means 10 is in the illustrated embodiment, a fixed by means of an adhesive to teeth of the lower jaw 2 Para occlusal spoon.
  • a movement of the marker 1 caused by a movement of the temporomandibular joint 4 is measured by means of a magnetic resonance tomographic recording device (not shown), for which the lower jaw 2, upper jaw 5 and marker 1 are positioned in a receiving volume of the receiving device and the receiving volume is measured.
  • a plurality of measurement data sets 6 are generated by means of the MR recording device during a first measurement time interval T1 at short time intervals dt.
  • T1 at short time intervals dt.
  • a three-dimensional position of the marker 1 is then determined at the time of creation of the respective measurement data set 6.
  • the determined marker positions 1 as a function of the time t are stored as a marker movement curve 7.
  • a point P is determined, wherein the point P of the first position PI of the lower jaw relative to the upper jaw, eg the natural final bite.
  • an image data set 8 is generated by means of the MR acquisition device during a second measurement time interval T2, the lower jaw, upper jaw and markers remaining in the receiving volume of the receiving device and the lower jaw remaining in the first position PI relative to the upper jaw.
  • z. B the natural final bite or defined by a position in the mouth dental impression / bite position.
  • the image data record 8 comprises three-dimensional image information of the lower jaw 2, the upper jaw 5 and the marker 1.
  • a three-dimensional lower jaw model as the second model 20 and a three-dimensional upper jaw model 50 as the first model 50 are generated by segmentation, which in FIG 2 are shown.
  • a relative position of the marker 1 to the lower jaw model 20 and the upper jaw model 50 is determined on the basis of the image data set.
  • a three-dimensional position of the marker 1 is further determined in the receiving volume.
  • a course of motion of the lower jaw model 20, 20 'relative to the upper jaw model 50 is calculated from the marker movement curve 7 and, as in FIG 2 outlined, presented.

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Abstract

L'invention concerne un procédé de détection et de représentation du mouvement d'une articulation de mâchoire (4) reliant une mâchoire inférieure (2) et une mâchoire supérieure (5) à l'aide d'une imagerie par résonance magnétique, consistant : à fixer un marqueur (1) à la mâchoire inférieure (2), à établir une courbe de mouvement de marqueur (7) sur la base d'enregistrements de mesure (6) d'imagerie par résonance magnétique à partir d'une mâchoire inférieure (2) déplacée par rapport à la mâchoire supérieure (5) pendant un premier intervalle de temps de mesure (T1), et à déterminer un point correspondant à une première position (P1) de la mâchoire inférieure (2) par rapport à la mâchoire supérieure (5) sur la courbe de mouvement. Pendant un second intervalle de temps de mesure (T2), un enregistrement d'image (8) est produit à partir d'une articulation de mâchoire (4) non déplacée et, ainsi, un premier modèle (50) représentant au moins une partie de la mâchoire supérieure et/ou une partie de l'os temporal comprenant la cavité de l'articulation de mâchoire, et un second modèle (20) représentant au moins une partie de la mâchoire inférieure, sont déterminés. Une variation de mouvement du second modèle (20, 20') par rapport au premier modèle (50) est calculée et représentée sur la base de la courbe de mouvement de marqueur (7).
PCT/EP2017/081641 2016-12-06 2017-12-06 Procédé de détection du mouvement d'une articulation de mâchoire WO2018104372A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780075848.2A CN110022792B (zh) 2016-12-06 2017-12-06 用于检测颞下颌关节的移动的方法
US16/466,316 US11116444B2 (en) 2016-12-06 2017-12-06 Method for detecting the movement of a temporomandibular joint
EP17818077.4A EP3551126B1 (fr) 2016-12-06 2017-12-06 Procédé de détection du mouvement d'une articulation de mâchoire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016224182.6 2016-12-06
DE102016224182.6A DE102016224182B4 (de) 2016-12-06 2016-12-06 Verfahren zur Erfassung der Bewegung eines Kiefergelenks

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WO2018104372A1 true WO2018104372A1 (fr) 2018-06-14

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PCT/EP2017/081641 WO2018104372A1 (fr) 2016-12-06 2017-12-06 Procédé de détection du mouvement d'une articulation de mâchoire

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US (1) US11116444B2 (fr)
EP (1) EP3551126B1 (fr)
CN (1) CN110022792B (fr)
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107080554B (zh) * 2017-05-17 2020-06-02 杭州口腔医院集团有限公司 颞下颌关节测量方法、牙合板制备方法
DE102019006600A1 (de) * 2019-09-19 2021-03-25 Florian Andreas Probst Vorrichtung und Verfahren zur Unterstützung der Bildgebung bei Magnetresonanztomographie
CN111583218A (zh) * 2020-04-30 2020-08-25 赤峰学院附属医院 用户颞下颌关节软硬组织的分析方法及装置、电子设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009118391A1 (fr) * 2008-03-27 2009-10-01 Tridenta Dentaltechnik Gmbh Procédé de production d'une gouttière occlusale
DE102009027356A1 (de) * 2009-05-28 2010-12-02 Sirona Dental Systems Gmbh Bildgebendes System zur Erzeugung eines 3D-Datensatzes sowie Verfahren zu dessen Betrieb
DE102014209437B3 (de) * 2014-05-19 2015-10-22 Sirona Dental Systems Gmbh Verfahren zur Erzeugung magnetresonanztomographischer Aufnahmen von zyklischer Bewegung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7412298B2 (en) * 2004-02-13 2008-08-12 Presswood Ronald G Method and system for morphometric analysis of human dental occlusal function and uses thereof
DE102013209158A1 (de) * 2013-05-16 2014-11-20 Fiagon Gmbh Verfahren zum Einbinden mittels eines bildgebenden Verfahrens gewonnener Daten
WO2015010733A2 (fr) * 2013-07-24 2015-01-29 Sirona Dental Systems Gmbh Détermination de la position de l'axe d'articulation condylienne pour créer un articulateur virtuel
US10776961B2 (en) 2014-07-30 2020-09-15 Navix International Limited Registering nuclear medicine data

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009118391A1 (fr) * 2008-03-27 2009-10-01 Tridenta Dentaltechnik Gmbh Procédé de production d'une gouttière occlusale
DE102009027356A1 (de) * 2009-05-28 2010-12-02 Sirona Dental Systems Gmbh Bildgebendes System zur Erzeugung eines 3D-Datensatzes sowie Verfahren zu dessen Betrieb
DE102014209437B3 (de) * 2014-05-19 2015-10-22 Sirona Dental Systems Gmbh Verfahren zur Erzeugung magnetresonanztomographischer Aufnahmen von zyklischer Bewegung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
S.SENGUPTA ET AL.: "Prospective Real Time Head Motion Correction Using Inductively Coupled Wireless NMR Probes", MAGN. RESON. MED., vol. 72, no. 4, 2014, pages 971 - 985
SHUO ZHANG ET AL: "Real-Time Magnetic Resonance Imaging of Temporomandibular Joint Dynamics", THE OPEN MEDICAL IMAGING JOURNAL, BENTHAM OPEN, NL, vol. 5, 1 January 2011 (2011-01-01), pages 1 - 7, XP002742190, ISSN: 1874-3471, DOI: 10.2174/1874347101105010001 *

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US20190290190A1 (en) 2019-09-26
US11116444B2 (en) 2021-09-14
DE102016224182A1 (de) 2018-06-07
EP3551126B1 (fr) 2020-07-15
CN110022792A (zh) 2019-07-16
DE102016224182B4 (de) 2018-08-30
EP3551126A1 (fr) 2019-10-16

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